I came back yesterday and left my '03 DHS with 96K miles running, at operating temperature in park and checked my ATF. It was bubbling near the top above the full level. I used a large syringe and removed about 2 ounces of the Dexron III to lower it to the full mark (and it stopped bubbling as well). About three hours later, when nearly stone cold, I checked the level again with the engine off. Nothing on the stick. In fact, there was no fluid visible at the bottom of the reservoir cavity.
I added a little over a quart of ATF to get the fluid level back up to the bottom of the dipstick cold zone, still 4 or 5” below the full mark to allow for expansion. Then I started the engine with the fill cap off. The fluid immediately rose to within an inch of the top of the filler hole which is above the full level, and I was worried it was going to overflow, so I put the cap back in place. Now I don’t know what to do. This is not acting like any transmission I have ever seen.
The transmission operation is smooth and predictable although I do have a slightly leaking 3rd clutch seal I think it’s called. Anyone have an idea what might be going on and how I should set the fluid level?
I added a little over a quart of ATF to get the fluid level back up to the bottom of the dipstick cold zone, still 4 or 5” below the full mark to allow for expansion. Then I started the engine with the fill cap off. The fluid immediately rose to within an inch of the top of the filler hole which is above the full level, and I was worried it was going to overflow, so I put the cap back in place. Now I don’t know what to do. This is not acting like any transmission I have ever seen.
The transmission operation is smooth and predictable although I do have a slightly leaking 3rd clutch seal I think it’s called. Anyone have an idea what might be going on and how I should set the fluid level?